So I’ve been trying to make a hole through a round object, and I seem to have succeeded more or less. Only a problem: the edge of the hole on the outside of the object is shaded. This is not what I want; specifically, I want for the surface of the object to appear completely smooth and uninterrupted, save for the sudden edge of the hole. I’ve tried creasing the edge, but nothing works. Here is a picture of what I’m talking about.
I am not using any Subsurf modifiers, or any modifiers for that matter. I’ve set Smooth on the object as a whole, which I suspect is what’s causing it. Unfortunately, I don’t know how to make it see that edge as being sharp. Selecting the faces around the edge and setting to Flat gets rid of it, but then makes each face appear flat.
Does anyone know how to fix this?